Adams County property record for 9873 Cook St, Thornton, CO 80229
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 861 sqft · built 1984 |
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | Owner Name on File |
| Last Sale | $114,000 (Jan 1999) |
| Tax Bill | $1,015 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R0040423 |
| Primary APN | R0040423 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Plumbing Fixtures | 6 Plumbing Fixtures |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 861 sqft Living Area |
| 1st Floor Area | 861 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplace | Fireplace |
| Year Built | Built 1984 |
|---|---|
| Architectural Style | Ranch |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Foundation Type | Concrete |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 10,890 sqft (0.25 acres) |
| Lot Dimensions | 154 ft deep x 71 ft wide |
| Garage Type | Attached |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air |
| Account Number | R0040423 |
|---|---|
| Old Parcel Number | 171913410013 |
| Street Address | 9873 COOK ST |
| City | THORNTON |
| State | CO |
| Zip | 80229-2815 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTH HILLS FILING NUMBER ONE SUBD BLK:7 LOT:12 |
| Legal Range | 68W |
| Legal Township | 02S |
| Legal Section | 13 |
| Legal Quarter | SW |
| Legal Subdivision | NORTH HILLS FILING NUMBER ONE SUBD |
| Legal Block | 7 |
| Legal Lot Number | 12 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 9207 |
The current owner of 9873 Cook St bought it in January 1999.
Source: Adams County records, as of February 9, 2026
| Owner of Record | Owner Name on File |
|---|---|
| Mailing Address | 9873 COOK ST, THORNTON, CO 80229-2815 |
| Occupancy | Owner Occupied |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 5, 1999 · Amount on File |
| Deed Sale | Jan 5, 1999 · Amount on File |
| Deed Document Number | 00488243 |
| Deed Book / Page | 5602 / 404 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 9873 Cook St was $1,015.
Source: Adams County assessment roll, as of August 25, 2025
| Type | Name |
|---|---|
| State | Colorado |
| County | Adams County |
| Municipality | Thornton City |
| Unified School District | Mapleton School District 1 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,015.00 | $23,940 Land $5,630 Building $18,310 | $383,000 Land $90,000 Building $293,000 |
| 2023 | $2,806.00 (+0.54%) | $28,410 (+1.46%) Land $5,750 Building $22,660 | $420,000 (+4.27%) Land $85,000 Building $335,000 |
| 2022 | $2,791.00 | $28,000 Land $11,820 Building $16,180 | $402,810 Land $170,000 Building $232,810 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 9873 Cook St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 2, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 9873 Cook St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.6% of Colorado |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF THORNTON serves 226,465 people · EPA ID CO0101150 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jul 2024 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 3 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 631 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| CenturyLink DSL | 140 / 20 |
| Rise Broadband Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Aerux Broadband.
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